87139675 has 24 divisors (see below), whose sum is σ = 123876000. Its totient is φ = 59566080.

The previous prime is 87139651. The next prime is 87139691. The reversal of 87139675 is 57693178.

It is not a de Polignac number, because 87139675 - 2⁹ = 87139163 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 78021 + ... + 79129.

It is an arithmetic number, because the mean of its divisors is an integer number (5161500).

Almost surely, 2^87139675 is an apocalyptic number.

87139675 is a deficient number, since it is larger than the sum of its proper divisors (36736325).

87139675 is a wasteful number, since it uses less digits than its factorization.

87139675 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1575 (or 1570 counting only the distinct ones).

The product of its digits is 317520, while the sum is 46.

The square root of 87139675 is about 9334.8634162477. The cubic root of 87139675 is about 443.3417643386.

The spelling of 87139675 in words is "eighty-seven million, one hundred thirty-nine thousand, six hundred seventy-five".